2006 Infiniti Q45 Sport
The 2006 Infiniti Q45 Sport is a 340-hp 4.5-liter V8 with a 5-speed automatic w/overdrive, learning algorithm, manual shift mode, downshift rev matching and rear-wheel drive. It starts at $58,100 MSRP and is rated at 18 mpg combined.
It makes 340 horsepower at 6,400 rpm and 333 lb-ft of torque at 4000 rpm, spinning to a 6,700 rpm redline. EPA fuel-economy estimates are 16 mpg city and 22 mpg highway (18 mpg combined).
The Q45 measures 200.8 inches long on a 113.0-inch wheelbase and has a curb weight of 4,154 lb.
| Spec | Value |
|---|---|
| Price | |
| MSRP | $58,100 ($93,663 *) |
| Engine | |
| Engine Type | VK45DE 4.5L DOHC V8 |
| Displacement | 4.5 L |
| Horsepower | 340 hp @ 6,400 rpm |
| Torque | 333 lb-ft @ 4000 rpm |
| Redline | 6,700 rpm |
| Valvetrain | DOHC, 4 valves/cylinder (32 total), Continuously Variable Valve Timing Control System (CVTCS), variable-length induction |
| Bore and Stroke | 93 x 82.7 mm |
| Compression Ratio | 10.5:1 |
| Injection Type | Electronic multi-port fuel injection (MPFi) |
| Drivetrain | |
| Drive Type | Rear-Wheel Drive |
| Transmission | |
| Transmission | 5-speed automatic w/overdrive, learning algorithm, manual shift mode, Downshift Rev Matching (revised for 2006) |
| 1st Gear | 3.83 |
| 2nd Gear | 2.37 |
| 3rd Gear | 1.52 |
| 4th Gear | 1 |
| 5th Gear | 0.83 |
| Reverse | 2.61 |
| Final Drive | 2.94 |
| Fuel Economy | |
| City | 16 MPG |
| Highway | 22 MPG |
| Combined | 18 MPG |
| Recommended Fuel | Premium unleaded gasoline |
| Suspension | |
| Front Suspension | Independent strut-type, stabilizer bar, sport-tuned electronically-controlled active damping |
| Rear Suspension | Independent multi-link, stabilizer bar, sport-tuned active damping, INFINITI Rear Active Steer (motor-driven rear steering) |
| Brakes | |
| Front Brake Disc | 290mm vented disc |
| Rear Brake Disc | 292mm vented disc |
| Tires & Wheels | |
| Wheels Front | 19-inch cast alloy |
| Wheels Rear | 19-inch cast alloy |
| Tires Front | P245/40WR19 |
| Tires Rear | P245/40WR19 |
| Dimensions & Weight | |
| Length | 200.8 in |
| Width | 72.6 in |
| Height | 58.7 in |
| Wheelbase | 113 in |
| Front Track | 62.6 in |
| Rear Track | 61.8 in |
| Ground Clearance | 5.8 in |
| Cargo Volume | 13.6 ft³ |
| Curb Weight | 4,154 lbs |
| Weight Distribution (F/R) | 54% / 46% |
| Interior | |
| Headroom Front | 38.4 in |
| Headroom Rear | 36.4 in |
| Legroom Front | 44 in |
| Legroom Rear | 37.3 in |
| Shoulder Room Front | 58.2 in |
| Shoulder Room Rear | 57.2 in |
| Hip Room Front | 56.5 in |
| Hip Room Rear | 55 in |
* Amount adjusted for inflation to 2026 dollars